I wouldn't have a clue about AIX, but we use Linux Virtual Server for load
balancing anything.
http://www.linuxvirtualserver.org/Works really well. :) And who says you can't put a Linux box in front of
several AIX boxes.
You could also look at a hardware load balancer like Chris suggests. Have a
look here for a list of vendors:
http://en.wikipedia.org/wiki/Load_balancing_(compu ting)That wikipedia page also gives some good links for further info.
Regards, Sebastian.

Venkat,
We have implemented load balance for all our web service and Http Server requests. Here are high level steps.
1. Need to get common VIP and DNS name. Assuming application running on two or more servers or instances
2. Configure the router to send traffic with this VIP to Load Balancer, in our case we are using Cisco Ace
3. With in the load balancer configure to resolve the VIP to destination servers and this can be either sticky or round-robin.
4. You can also install SSL and configure Load balancer to use certificates.
For client the Http Request URL should be pointing to VIP instead of actual servers.
Good Luck
Raghu
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